text Jakarta Institut Pertanian Bogor 2003 In ix, 57 p. : ill, 28 cm Agung Kusdianto DUCKS EGGS MANAGEMENT HATCHERIES 30 - INLIS000000000000237 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)